for k, v := range m {
		m[k] = f(v)
	}
}

var m1 = map[int]int{1: 2, 2: 4, 4: 8, 8: 16}
var m2 = map[int]string{1: "2", 2: "4", 4: "8", 8: "16"}

func TestKeys() {
	want := []int{1, 2, 4, 8}

	got1 := _Keys(m1)
	sort.Ints(got1)
	if !_SliceEqual(got1, want) {
		panic(fmt.Sprintf("_Keys(%v) = %v, want %v", m1, got1, want))
	}

	got2 := _Keys(m2)

@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
public class MultimapKeysTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
  @CollectionSize.Require(SEVERAL)
  public void testKeys() {
    resetContainer(
        Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0()));
    Multiset<K> keys = multimap().keys();
    assertEquals(2, keys.count(k0()));

	// detail ever changes.
	// [1] https://etcd.io/docs/v3.5/learning/api_guarantees/#isolation-level-and-consistency-of-replicas
	ctx, store, etcdClient := testSetup(t)

	dir := "/testing"
	key := dir + "/testkey"
	out := &example.Pod{}
	obj := &example.Pod{ObjectMeta: metav1.ObjectMeta{Name: "foo", SelfLink: "testlink"}}

	if err := store.Create(ctx, key, obj, out, 0); err != nil {
		t.Fatalf("Set failed: %v", err)
	}

@Ignore // Affects only Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
public class MultimapKeysTester<K, V> extends AbstractMultimapTester<K, V, Multimap<K, V>> {
  @CollectionSize.Require(SEVERAL)
  public void testKeys() {
    resetContainer(
        Helpers.mapEntry(k0(), v0()), Helpers.mapEntry(k0(), v1()), Helpers.mapEntry(k1(), v0()));
    Multiset<K> keys = multimap().keys();
    assertEquals(2, keys.count(k0()));

			if d := cmp.Diff(tt.want, got); d != "" {
				t.Fatalf("EncryptionConfiguration validation results mismatch (-want +got):\n%s", d)
			}
		})
	}
}

func TestKey(t *testing.T) {
	root := field.NewPath("resources")
	path := root.Index(0).Child("provider").Index(0).Child("key").Index(0)
	testCases := []struct {
		desc string
		in   apiserver.Key
		want field.ErrorList

		}
	}
	for i := 0; i < len(vfy0SC); i++ {
		if f := Y0(vfy0SC[i]); !alike(y0SC[i], f) {
			t.Errorf("Y0(%g) = %g, want %g", vfy0SC[i], f, y0SC[i])
		}
	}
}

func TestY1(t *testing.T) {
	for i := 0; i < len(vf); i++ {
		a := Abs(vf[i])
		if f := Y1(a); !soclose(y1[i], f, 2e-14) {
			t.Errorf("Y1(%g) = %g, want %g", a, f, y1[i])
		}
	}
	for i := 0; i < len(vfy0SC); i++ {